Решение нашел.
function save_Video_Post() {
global $post;
if( has_post_format( 'video' ) ) {
$KEKSik = get_post_meta( $post->ID, 'wpvr_video_service_url', true );
update_post_meta( $post->ID, 'video_url', $KEKSik );
}
}
add_action( 'acf/save_post', 'save_Video_Post');